Carriage body expanding mechanism

Abstract

The utility model discloses a carriage body expanding mechanism which comprises a transmission mechanism and a sliding mechanism, the transmission mechanism comprises a motor fixedly arranged on the bottom wall of a carriage body, a mounting base, a transmission shaft fixedly arranged at the driving end of the motor and a transmission rack penetrating through and arranged on the mounting base in a sliding mode, and the transmission shaft and the transmission rack are perpendicular to each other. A transmission gear is fixedly arranged on the transmission shaft and meshed with the transmission rack, and a connecting base is fixedly arranged at one end of the transmission rack and used for being fixedly connected to an expansion cabin side plate. The sliding mechanism is also arranged on the bottom wall of the compartment body, and the expansion cabin side plate is fixed to the sliding end of the sliding mechanism. The space occupied by the expansion mechanism can be effectively reduced, and the internal use space height is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle extension mechanisms, and in particular to a body extension mechanism. Background Technology

[0002] In the fields of special-purpose vehicles, special vehicles, and modified vehicles, in order to increase the interior space of the vehicle, an extension mechanism is installed in the cargo compartment to extend the cargo compartment horizontally and thus expand the interior space.

[0003] Special vehicles or special vehicles usually have a fixed overall height, and most of their extension mechanisms adopt an integrated upper and lower structure that combines the sliding mechanism and the transmission mechanism. That is, the sliding mechanism is set above the transmission mechanism and fixedly installed on the drive end of the transmission mechanism.

[0004] However, in order to ensure the comfort of passengers, it is usually necessary to specify the height requirements of the interior space of the vehicle body. Since the overall height of the vehicle body is fixed, and the extension mechanism is relatively tall, it increases the space occupied, thereby reducing the height of the interior space without changing the overall height, and thus failing to meet the height requirements of the interior space. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a body expansion mechanism that can effectively reduce the space occupied by the expansion mechanism and increase the height of the internal usable space.

[0006] To solve the above-mentioned technical problems, the compartment expansion mechanism provided by this utility model adopts the following technical solution:

[0007] A compartment expansion mechanism includes a transmission mechanism and a sliding mechanism. The transmission mechanism includes a motor fixedly mounted on the bottom wall of the compartment, a mounting base, a transmission shaft fixedly mounted on the drive end of the motor, and a transmission rack passing through and slidingly mounted on the mounting base. The transmission shaft and the transmission rack are arranged perpendicular to each other. A transmission gear is fixedly mounted on the transmission shaft, and the transmission gear and the transmission rack mesh with each other. A connecting seat is fixedly mounted on one end of the transmission rack, and the connecting seat is used to fix it to the side plate of the expansion compartment. The sliding mechanism is also located on the bottom wall of the compartment, and the side plate of the expansion compartment is simultaneously fixed to the sliding end of the sliding mechanism.

[0008] By adopting the above technical solution, due to the meshing of the transmission gear and transmission rack on the transmission shaft, the motor drives the transmission shaft to rotate, which in turn drives the transmission rack to move linearly relative to the mounting base. Fixed to the side panel of the expansion compartment by the connecting seat, the transmission rack can move the side panel of the expansion compartment to achieve horizontal expansion of the vehicle body. The sliding mechanism supports the moving expansion compartment, and the sliding end of the sliding mechanism reduces the sliding resistance on the side panel of the expansion compartment. The transmission mechanism and the sliding mechanism are independent of each other and are both located on the bottom wall of the compartment. The traditional expansion mechanism requires 330mm of height space, while the expansion mechanism of this application requires only 230mm, increasing the usable height of the cabin interior by 100mm, better meeting the user's space requirements.

[0009] Optionally, the drive end of the motor is connected to a speed reducer, and the transmission shaft is fixedly installed at the output end of the speed reducer.

[0010] By adopting the above technical solutions, configuring a speed reducer can avoid the inefficiency or overload caused by the motor directly driving the load, improve driving accuracy and stability, and control the movement distance of the expansion compartment more stably and accurately, that is, to expand the space of the vehicle body more safely, stably and accurately.

[0011] Optionally, the reducer is a dual-output-shaft reducer, with a drive shaft fixed to each of the two output shafts. The mounting base is configured in two sets, located on both sides of the reducer. A drive rack passes through and slides through each set of mounting bases. The two drive racks are respectively meshed with the drive gears of the two drive shafts. A connecting seat is fixedly provided on each of the two drive racks, and the two connecting seats are used to fix them to the side plate of the expansion compartment.

[0012] By adopting the above technical solution, a dual-output shaft reducer is set up to drive two transmission racks respectively, and the expansion compartment is driven by the two transmission racks simultaneously, making the driving of the expansion compartment more stable.

[0013] Optionally, a manual drive unit is also included, wherein a driven bevel gear is fixed on the connecting shaft between the motor and the reducer, and a driving bevel gear is fixed on the output end of the manual drive unit, wherein the driving bevel gear and the driven bevel gear mesh with each other.

[0014] By adopting the above technical solution, in the event of motor or power failure, power can be input to the reducer through a manual drive component, thereby driving the transmission rack and pinion and improving practicality.

[0015] Optionally, the manual drive unit includes a crank steering box and a gear shaft fixed to the output shaft of the crank steering box, with the driving bevel gear fixed to one end of the gear shaft.

[0016] By adopting the above technical solution, power is input by manually turning the crank on the crank steering box, and then the power is transmitted to the power input end of the reducer through the gear shaft.

[0017] Optionally, a gear shaft support seat is fixedly provided on the bottom wall of the compartment, and the gear shaft passes through the gear shaft support seat.

[0018] By adopting the above technical solution, the gear shaft is radially supported by the gear shaft support seat, thereby improving the stability and effectiveness of power transmission by the gear shaft.

[0019] Optionally, the sliding mechanism includes a first channel steel and a second channel steel fixed to the bottom wall of the compartment. The first channel steel and the second channel steel are arranged parallel to each other. A first movable rod is slidably arranged between the first channel steel and the second channel steel. The sliding direction of the first movable rod is parallel to the transmission rack. The first movable rod is used to fix to the side plate of the expansion compartment.

[0020] By adopting the above technical solution, the expansion cabin is fixed to the first movable rod. Since the first movable rod can slide relative to the first channel steel and the second channel steel, it can support the moving expansion cabin.

[0021] Optionally, at least one bearing is provided between the first channel steel and the second channel steel, and the first movable rod is located between the first channel steel and the second channel steel and rests on at least one bearing.

[0022] By adopting the above technical solution, the first movable rod is placed on at least one bearing to achieve stable sliding of the first movable rod relative to the first channel steel and the second channel steel, and to enable the first movable rod to stably support the moving expansion compartment.

[0023] Optionally, the transmission mechanism is configured as two, with the arrangement direction of the two transmission mechanisms parallel to the sliding direction of the movable channel steel, and the moving directions of the transmission racks of the two transmission mechanisms being set far apart, with the expansion compartment side plates fixedly installed on the transmission racks of the two transmission mechanisms respectively.

[0024] By adopting the above technical solution, two transmission mechanisms moving in opposite directions can drive the two expansion compartment side panels to move, thereby further expanding the expansion space.

[0025] Optionally, a third channel steel is provided on the side of the first channel steel away from the second channel steel, and a second movable rod and at least one bearing are provided between the first channel steel and the third channel steel. The second movable rod rests on the at least one bearing and is also used to fix the side plate of the expansion compartment.

[0026] By adopting the above technical solution and by setting the third channel steel, the first movable rod and the second movable rod can slide independently of each other, so as to provide sliding support for the two expansion compartments at the same time.

[0027] In summary, this utility model has at least one of the following beneficial technical effects:

[0028] 1. The mounting base is fixed to the side panel of the expansion compartment, and the transmission rack can drive the side panel of the expansion compartment to move, so as to realize the horizontal expansion of the vehicle body; the sliding mechanism can support the moving expansion compartment, and the sliding resistance of the side panel of the expansion compartment is reduced by the sliding end of the sliding mechanism; the transmission mechanism and the sliding mechanism are independent of each other and are both set on the bottom wall of the compartment. The height space required for the installation of the traditional expansion mechanism is 330mm, while the space required for the installation of the expansion mechanism of this application is reduced to 230mm, which increases the usable height of the cabin by 100mm and can better meet the user's space needs;

[0029] 2. The configuration of a speed reducer can avoid the inefficiency or overload caused by the motor directly driving the load, improve the driving accuracy and stability, and control the movement distance of the expansion compartment more stably and accurately, that is, to expand the space of the vehicle body more safely, stably and accurately.

[0030] 3. In the event of motor or power failure, power can be input to the reducer via a manual drive mechanism to drive the transmission rack and pinion, thereby improving practicality. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of the unfolded state of the compartment extension mechanism of this utility model.

[0032] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0033] Figure 3 This is a schematic diagram of the transmission mechanism in this utility model.

[0034] Figure 4 yes Figure 1 A magnified structural diagram of part B.

[0035] Figure 5 This is a schematic diagram of the sliding mechanism in this utility model.

[0036] Figure 6 yes Figure 1 A magnified structural diagram of section C.

[0037] Explanation of reference numerals in the attached drawings: 1. Transmission mechanism; 11. Motor; 12. Mounting base; 13. Drive shaft; 131. Transmission gear; 14. Transmission rack; 15. Reducer; 16. Connecting seat; 17. Mounting plate; 2. Sliding mechanism; 21. First channel steel; 22. Second channel steel; 23. Third channel steel; 24. First movable rod; 25. Second movable rod; 26. Bearing; 3. Manual drive component; 31. Crank handle steering box; 32. Gear shaft; 33. Driving bevel gear; 34. Driven bevel gear; 35. Gear shaft support seat; 4. Support block; 5. Reinforcing block. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0039] This utility model discloses a compartment expansion mechanism. (Refer to...) Figure 1 The body expansion mechanism includes two transmission mechanisms 1 and two sliding mechanisms 2. The two transmission mechanisms 1 are located between the two sliding mechanisms 2. The moving directions of the driving ends of the two transmission mechanisms 1 are set far apart. The sliding paths of the sliding ends of the two sliding mechanisms 2 are parallel to the moving paths of the driving ends of the transmission mechanisms 1. The arrangement direction of the two transmission mechanisms 1 is parallel to the sliding paths of the sliding ends of the sliding mechanisms 2.

[0040] Reference Figure 1 and Figure 2 The transmission mechanism 1 includes a motor 11, a reducer 15, a drive shaft 13, a drive rack 14, and a set of mounting seats 12. A mounting plate 17 is fixedly connected to the bottom wall of the vehicle body. The motor 11 and reducer 15 are bolted to the mounting plate 17. The output shaft of the motor 11 is parallel to the sliding direction of the sliding mechanism 2. The power input end of the reducer 15 is fixedly connected to the output shaft of the motor 11, and the drive shaft 13 is fixedly connected to the power output end of the reducer 15. The reducer 15 avoids the inefficiency or overload caused by the motor 11 directly driving the load, improving driving accuracy and stability, and allowing for more stable and precise control of the expansion compartment's movement distance, thus enabling safer, more stable, and precise space expansion of the vehicle body.

[0041] Reference Figure 2 , Figure 3 and Figure 4A set of mounting bases 12 includes two mounting bases 12, both of which are fixedly connected to the bottom wall of the compartment. A transmission rack 14 passes through and slides between the two mounting bases 12, with the sliding path of the transmission rack 14 parallel to the sliding direction of the sliding mechanism 2. The transmission shaft 13 and the transmission rack 14 are perpendicular to each other. A transmission gear 131 is coaxially fixed at the end of the transmission shaft 13, and the transmission gear 131 meshes with the transmission rack 14. One end of the transmission rack 14 is fixedly connected to a connecting seat 16 via a pin, which is used to fix it to the side plate of the expansion compartment. The mounting plates 17 of the two transmission mechanisms 1 are spaced apart along the sliding direction. The drive shafts of the motors 11 of the two transmission mechanisms 1 are arranged opposite to each other, and the ends of the transmission racks 14 of the two transmission mechanisms 1 that are far apart are fixed to the connecting seats 16.

[0042] The motor 11 is started, which drives the output shaft of the reducer 15 to rotate. The reducer 15 drives the transmission shaft 13 to rotate, and the circumferential rotation of the transmission shaft 13 is converted into the linear motion of the transmission rack 14 through the transmission gear 131. Through the back-and-forth movement of the transmission rack 14, which is fixed to the side panel of the expansion compartment through the connecting seat 16, the transmission rack 14 can drive the side panel of the expansion compartment to move, so as to realize the horizontal expansion of the vehicle body.

[0043] Reference Figure 2 and Figure 3 The reducer 15 is a dual-output shaft reducer 15. Both output shafts of the reducer 15 are fixed with drive shafts 13. Two sets of mounting seats 12 are located on either side of the reducer 15. Each set of mounting seats 12 has a drive rack 14 that slides through it. The two drive racks 14 mesh with the drive gears 131 of the two drive shafts 13, respectively. Each drive rack 14 is fixedly equipped with a connecting seat 16, which is used to fix the connection to the side panel of the expansion compartment. The dual-output shaft reducer 15 drives the two drive racks 14 simultaneously, making the drive of the expansion compartment more stable. Furthermore, the two transmission mechanisms 1 moving in opposite directions can move the two side panels of the expansion compartment to further expand the expansion space.

[0044] Reference Figure 5 and Figure 6 The sliding mechanism 2 includes a first channel steel 21, a second channel steel 22, and a third channel steel 23, all of which are fixed to the bottom wall of the compartment via support blocks 4. The second channel steel 22 and the third channel steel 23 are each welded with reinforcing blocks 5, which are fixedly connected to the bottom wall of the compartment to enhance their strength.

[0045] Reference Figure 5 and Figure 6The first channel steel 21, the second channel steel 22, and the third channel steel 23 are arranged parallel to each other. The length of the first channel steel 21 is greater than the length of the second channel steel 22 and the third channel steel 23. The second channel steel 22 and the third channel steel 23 are located on both sides of the first channel steel 21, and are respectively close to the two ends of the first channel steel 21. Multiple bearings 26 are arranged between the first channel steel 21 and the second channel steel 22, and the arrangement direction of the multiple bearings 26 is parallel to the long side of the first channel steel 21. Multiple bearings 26 are also arranged between the first channel steel 21 and the third channel steel 23, and the arrangement direction of the multiple bearings 26 is parallel to the long side of the first channel steel 21.

[0046] Reference Figure 5 and Figure 6 A first movable rod 24 is slidably disposed between the first channel steel 21 and the second channel steel 22. The sliding direction of the first movable rod 24 is parallel to the transmission rack 14. The first movable rod 24 is used to fix the side plate of the expansion compartment. A second movable rod 25 is disposed between the first channel steel 21 and the third channel steel 23. The second movable rod 25 is also used to fix the side plate of the expansion compartment. The first movable rod 24 is located between the first channel steel 21 and the second channel steel 22 and rests on multiple bearings 26. The second movable rod 25 is located between the first channel steel 21 and the third channel steel 23 and rests on multiple bearings 26. By placing the first movable rod 24 and the second movable rod 25 on at least one bearing 26, stable sliding of the first movable rod 24 and the second movable rod 25 is achieved.

[0047] One side panel of the expansion compartment is fixed to the first movable rod 24, and the other side panel of the expansion compartment is fixed to the second movable rod 25. Since the first movable rod 24 can slide relative to the first channel steel 21 and the second channel steel 22, and the second movable rod 25 can slide relative to the first channel steel 21 and the third channel steel 23, it can support the moving expansion compartment. The arrangement of the second channel steel 22 and the third channel steel 23 allows the first movable rod 24 and the second movable rod 25 to slide independently, enabling simultaneous sliding support for both expansion compartments.

[0048] The transmission mechanism 1 and the sliding mechanism 2 are independent of each other and are both located on the bottom wall of the container. The height space required for installing the traditional expansion mechanism is 330mm, while the space required for installing the expansion mechanism in this application is reduced to 230mm, which increases the usable space height inside the container by 100mm and can better meet the user's space needs.

[0049] Reference Figure 3To ensure the normal operation of the extension mechanism in the event of a motor 11 malfunction or power failure, a manual drive unit 3 is connected to the motor 11. The manual drive unit 3 includes a crank steering box 31 and a gear shaft 32. The gear shaft 32 is fixed to the output shaft of the crank steering box 31. A driving bevel gear 33 is coaxially fixed to the end of the gear shaft 32 furthest from the crank steering box 31. A driven bevel gear 34 is fixed to the connecting shaft between the motor 11 and the reducer 15. The driving bevel gear 33 and the driven bevel gear 34 mesh with each other. In the event of a motor 11 malfunction or power failure, power is input by manually turning the crank on the crank steering box 31. The power is then transmitted to the power input end of the reducer 15 via the gear shaft 32, thus driving the transmission rack 14 and improving practicality.

[0050] Expanding compartment deployment process: Start motor 11, motor 11 drives the output shaft of reducer 15 to rotate, reducer 15 drives transmission rack 14 to move, moving the expanding compartment outward, stopping when it contacts the limit switch; In the absence of power, manually drive the crank handle of crank steering box 31 to drive gear shaft 32 to rotate, gear shaft 32 drives the output shaft of reducer 15 to rotate, reducer 15 drives transmission rack 14 to move, moving the expanding compartment outward, stopping when it contacts the limit switch; the operation method of both expanding compartments is the same.

[0051] The retraction process of the expansion compartment: Start motor 11, which drives the output shaft of reducer 15 to rotate. Reducer 15 drives the transmission rack 14 to move, moving the expansion compartment inward. It stops moving when it contacts the limit switch. In the absence of power, manually drive the crank of the crank steering box 31 to rotate the gear shaft 32. The gear shaft 32 drives the output shaft of reducer 15 to rotate, and reducer 15 drives the transmission rack 14 to move, moving the expansion compartment inward. It stops moving when it contacts the limit switch. The operation method for both expansion compartments is the same.

[0052] The implementation principle of the protective device for the vehicle body expansion mechanism of this utility model embodiment is as follows: The motor 11 is started, driving the output shaft of the reducer 15 to rotate. The reducer 15 drives the transmission shaft 13 to rotate, and the circumferential rotation of the transmission shaft 13 is converted into the linear motion of the transmission rack 14 via the transmission gear 131. Through the forward and backward movement of the transmission rack 14, it is fixed to the side plate of the expansion compartment via the connecting seat 16. The transmission rack 14 can drive the side plate of the expansion compartment to move, thereby expanding the vehicle body horizontally. Furthermore, through two transmission mechanisms 1 moving in opposite directions, the two side plates of the expansion compartment can be moved to further expand the expansion space. The transmission mechanism 1 and the sliding mechanism 2 are independent of each other and are both located on the bottom wall of the vehicle body. The required height space for installing a traditional expansion mechanism is 330mm, while the required space for installing the expansion mechanism of this application is reduced to 230mm, increasing the usable space height inside the container by 100mm, which better meets the user's space requirements.

[0053] In the event of a motor 11 malfunction or power failure, power is input by manually turning the crank on the crank handle steering box 31. The power is then transmitted to the power input end of the reducer 15 through the gear shaft 32, thereby driving the transmission rack 14 and improving practicality.

[0054] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A compartment expansion mechanism, characterized in that: The system includes a transmission mechanism (1) and a sliding mechanism (2). The transmission mechanism (1) includes a motor (11) fixedly mounted on the bottom wall of the compartment, a mounting base (12), a transmission shaft (13) fixedly mounted on the drive end of the motor (11), and a transmission rack (14) that passes through and slides on the mounting base (12). The transmission shaft (13) and the transmission rack (14) are arranged perpendicular to each other. The transmission shaft (13) is fixedly mounted with a transmission gear (131). The transmission gear (131) and the transmission rack (14) mesh with each other. One end of the transmission rack (14) is fixedly mounted with a connecting seat (16), which is used to fix the connection to the side plate of the expansion compartment. The sliding mechanism (2) is also located on the bottom wall of the compartment, and the side plate of the expansion compartment is simultaneously fixed to the sliding end of the sliding mechanism (2).

2. The compartment expansion mechanism according to claim 1, characterized in that: The drive end of the motor (11) is connected to a reducer (15), and the transmission shaft (13) is fixedly installed at the output end of the reducer (15).

3. The compartment expansion mechanism according to claim 2, characterized in that: The reducer (15) is a dual-output shaft reducer (15). Both output shafts of the reducer (15) are fixed with transmission shafts (13). The mounting base (12) is set in two sets. The two sets of mounting bases (12) are located on both sides of the reducer (15). Both sets of mounting bases (12) are fitted with and slide with transmission racks (14). The two transmission racks (14) are respectively meshed with the transmission gears (131) of the two transmission shafts (13). Both transmission racks (14) are fixedly provided with connecting seats (16). Both connecting seats (16) are used to fix and connect to the side plate of the expansion compartment.

4. The compartment expansion mechanism according to claim 2, characterized in that: It also includes a manual drive unit (3), a driven bevel gear (34) is fixed on the connecting shaft between the motor (11) and the reducer (15), and an active bevel gear (33) is fixed on the output end of the manual drive unit (3), and the active bevel gear (33) meshes with the driven bevel gear (34).

5. The compartment expansion mechanism according to claim 4, characterized in that: The manual drive unit (3) includes a crank steering box (31) and a gear shaft (32) fixed to the output shaft of the crank steering box (31), and the driving bevel gear (33) is fixed to one end of the gear shaft (32).

6. The compartment expansion mechanism according to claim 5, characterized in that: A gear shaft support seat (35) is fixedly installed on the bottom wall of the compartment, and the gear shaft (32) passes through the gear shaft support seat (35).

7. The compartment expansion mechanism according to claim 1, characterized in that: The sliding mechanism (2) includes a first channel steel (21) and a second channel steel (22) fixed to the bottom wall of the compartment. The first channel steel (21) and the second channel steel (22) are arranged parallel to each other. A first movable rod (24) is slidably arranged between the first channel steel (21) and the second channel steel (22). The sliding direction of the first movable rod (24) is parallel to the transmission rack (14). The first movable rod (24) is used to fix to the side plate of the expansion compartment.

8. The compartment expansion mechanism according to claim 7, characterized in that: At least one bearing (26) is provided between the first channel steel (21) and the second channel steel (22), and the first movable rod (24) is located between the first channel steel (21) and the second channel steel (22) and rests on at least one bearing (26).

9. A compartment expansion mechanism according to claim 7, characterized in that: The transmission mechanism (1) is configured as two, the arrangement direction of the two transmission mechanisms (1) is parallel to the sliding direction of the movable channel steel, and the moving directions of the transmission racks (14) of the two transmission mechanisms (1) are set far apart. The transmission racks (14) of the two transmission mechanisms (1) are respectively fixedly provided with the expansion compartment side plate.

10. A compartment expansion mechanism according to claim 9, characterized in that: A third channel steel (23) is provided on the side of the first channel steel (21) away from the second channel steel (22). A second movable rod (25) and at least one bearing (26) are provided between the first channel steel (21) and the third channel steel (23). The second movable rod (25) rests on at least one bearing (26) and is also used to fix the side panel of the expansion compartment.

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